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698993-88-3

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698993-88-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 698993-88-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,9,8,9,9 and 3 respectively; the second part has 2 digits, 8 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 698993-88:
(8*6)+(7*9)+(6*8)+(5*9)+(4*9)+(3*3)+(2*8)+(1*8)=273
273 % 10 = 3
So 698993-88-3 is a valid CAS Registry Number.

698993-88-3Downstream Products

698993-88-3Relevant articles and documents

Studies on quinazoline chemistry. 5. Synthesis of 3,4-dihydroquinazolines with functional substituents at C-2 atom and their alkylation reactions

Gromachevskaya,Kaigorodova,Pushkareva,Krapivin

, p. 1492 - 1502 (2013/04/23)

Syntheses are reported for a new series of 2-substituted 4,4-diphenyl-3,4-dihydroquinazolines by the reaction of o- aminophenyldiphenylcarbinol (APC) with various nitriles. The reaction of APC with substituted 5-bromo-3-cyano-2(1H)-pyridones leads to the formation of derivatives of two products: 3,4-dihydroquinazolines and 4H-3,1-benzoxazines. The alkylation of 3,4-dihydroquinazolines using dimethyl sulfate proceeds through N,N-dimethylation. The structure of these products is a function of the nature of the substituent at C-2 atom of the heterocycle.

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